diff --git a/mail-service/pom.xml b/mail-service/pom.xml
index bf0513a37a5d2097c9e0eb84a8f58b8ef4a0b68b..1df0a75b7bfca9e20fe62127779528b724799505 100644
--- a/mail-service/pom.xml
+++ b/mail-service/pom.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     Copyright (C) 2022 Das Land Schleswig-Holstein vertreten durch den
diff --git a/notification-manager/pom.xml b/notification-manager/pom.xml
index 5ee3a493c9fc6cd924a888987145c3011ad6f4fc..ae11b4fea983d82bb71218cae817bbf1216b938e 100644
--- a/notification-manager/pom.xml
+++ b/notification-manager/pom.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     Copyright (C) 2022 Das Land Schleswig-Holstein vertreten durch den
diff --git a/pluto-interface/pom.xml b/pluto-interface/pom.xml
index 1688f466a73535b49440060437a0ff3a1b26932e..2e87841d7aee099aaac99cddd51159e591a91360 100644
--- a/pluto-interface/pom.xml
+++ b/pluto-interface/pom.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     Copyright (C) 2022 Das Land Schleswig-Holstein vertreten durch den
diff --git a/pluto-utils/pom.xml b/pluto-utils/pom.xml
index dfd4ef8e55d50e0cd7c426e3085fda66934eb422..1f3dcfcbd5b4dd688bca232f43d2aa9741c4b699 100644
--- a/pluto-utils/pom.xml
+++ b/pluto-utils/pom.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     Copyright (C) 2022 Das Land Schleswig-Holstein vertreten durch den
diff --git a/pom.xml b/pom.xml
index 5527b9cd1e7eb400102efacec252833fdafede16..7b164277d1becad004364fa2e54ec5d322a7c6a9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
 
     Copyright (C) 2022 Das Land Schleswig-Holstein vertreten durch den